This is my blog. There are many like it, but they probably get updated more often.

Finally, our team did confirm that the volume buttons and mute slider are indeed in a slightly different spot on the Verizon iPhone than on the AT&T version. Foresman reported that the volume buttons were moved “about 2mm or less” on the Verizon version so that they no longer line up with the AT&T iPhone. New, slightly modified cases for one and all?